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70:B3:D5:64:5 Project Decibel, Inc.

Every MAC address from 70:B3:D5:64:50:00 to 70:B3:D5:64:5F:FF belongs to a block the IEEE assigned to Project Decibel, Inc.. Network cards, phones and other devices it makes carry addresses from here.

Who 70:B3:D5:64:5 belongs to

Written 70:B3:D5:64:5, 70-B3-D5-64-5 or 70B3D5645, depending on the system. Look up a full address.

Prefix
70:B3:D5:64:5/36
Organization
Project Decibel, Inc.
Registry
MA-S (36 bits)
Addresses
4,096
First address
70:B3:D5:64:50:00
Last address
70:B3:D5:64:5F:FF
Address type
Globally unique, unicast
Registered address
745 Atlantic Ave Fl 8 Boston MA US 02111

Inside 70:B3:D5

This MA-S block is carved from the 24-bit block 70:B3:D5, which the IEEE holds as IEEE Registration Authority and divides among smaller assignees.